clippy_lints/src/lib.rs

   1 // error-pattern:cargo-clippy
   2
   3 #![feature(box_syntax)]
   4 #![feature(rustc_private)]
   5 #![feature(slice_patterns)]
   6 #![feature(stmt_expr_attributes)]
   7 #![feature(range_contains)]
   8 #![feature(macro_vis_matcher)]
   9 #![allow(unknown_lints, indexing_slicing, shadow_reuse, missing_docs_in_private_items)]
  10 #![recursion_limit = "256"]
  11 #![allow(stable_features)]
  12 #![feature(iterator_find_map)]
  13 #![feature(macro_at_most_once_rep)]
  14 #![feature(rust_2018_preview)]
  15
  16 extern crate cargo_metadata;
  17 #[macro_use]
  18 extern crate rustc;
  19 extern crate rustc_target;
  20 extern crate rustc_typeck;
  21 extern crate syntax;
  22 extern crate syntax_pos;
  23
  24 extern crate toml;
  25
  26 // for unicode nfc normalization
  27
  28 extern crate unicode_normalization;
  29
  30 // for semver check in attrs.rs
  31
  32 extern crate semver;
  33
  34 // for regex checking
  35
  36 extern crate regex_syntax;
  37
  38 // for finding minimal boolean expressions
  39
  40 extern crate quine_mc_cluskey;
  41
  42 extern crate rustc_errors;
  43 extern crate rustc_plugin;
  44
  45 #[macro_use]
  46 extern crate matches as matches_macro;
  47
  48 extern crate serde;
  49 #[macro_use]
  50 extern crate serde_derive;
  51
  52 #[macro_use]
  53 extern crate lazy_static;
  54
  55 extern crate itertools;
  56 extern crate pulldown_cmark;
  57 extern crate url;
  58
  59 #[macro_use]
  60 extern crate if_chain;
  61
  62 macro_rules! declare_clippy_lint {
  63     { pub $name:tt, style, $description:tt } => {
  64         declare_lint! { pub $name, Warn, $description }
  65     };
  66     { pub $name:tt, correctness, $description:tt } => {
  67         declare_lint! { pub $name, Deny, $description }
  68     };
  69     { pub $name:tt, complexity, $description:tt } => {
  70         declare_lint! { pub $name, Warn, $description }
  71     };
  72     { pub $name:tt, perf, $description:tt } => {
  73         declare_lint! { pub $name, Warn, $description }
  74     };
  75     { pub $name:tt, pedantic, $description:tt } => {
  76         declare_lint! { pub $name, Allow, $description }
  77     };
  78     { pub $name:tt, restriction, $description:tt } => {
  79         declare_lint! { pub $name, Allow, $description }
  80     };
  81     { pub $name:tt, cargo, $description:tt } => {
  82         declare_lint! { pub $name, Allow, $description }
  83     };
  84     { pub $name:tt, nursery, $description:tt } => {
  85         declare_lint! { pub $name, Allow, $description }
  86     };
  87     { pub $name:tt, internal, $description:tt } => {
  88         declare_lint! { pub $name, Allow, $description }
  89     };
  90     { pub $name:tt, internal_warn, $description:tt } => {
  91         declare_lint! { pub $name, Warn, $description }
  92     };
  93 }
  94
  95 pub mod consts;
  96 #[macro_use]
  97 pub mod utils;
  98
  99 // begin lints modules, do not remove this comment, it’s used in `update_lints`
 100 pub mod approx_const;
 101 pub mod arithmetic;
 102 pub mod array_indexing;
 103 pub mod assign_ops;
 104 pub mod attrs;
 105 pub mod bit_mask;
 106 pub mod blacklisted_name;
 107 pub mod block_in_if_condition;
 108 pub mod booleans;
 109 pub mod bytecount;
 110 pub mod collapsible_if;
 111 pub mod const_static_lifetime;
 112 pub mod copies;
 113 pub mod cyclomatic_complexity;
 114 pub mod derive;
 115 pub mod doc;
 116 pub mod double_comparison;
 117 pub mod double_parens;
 118 pub mod drop_forget_ref;
 119 pub mod duration_subsec;
 120 pub mod else_if_without_else;
 121 pub mod empty_enum;
 122 pub mod entry;
 123 pub mod enum_clike;
 124 pub mod enum_glob_use;
 125 pub mod enum_variants;
 126 pub mod eq_op;
 127 pub mod erasing_op;
 128 pub mod escape;
 129 pub mod eta_reduction;
 130 pub mod eval_order_dependence;
 131 pub mod excessive_precision;
 132 pub mod explicit_write;
 133 pub mod fallible_impl_from;
 134 pub mod format;
 135 pub mod formatting;
 136 pub mod functions;
 137 pub mod identity_conversion;
 138 pub mod identity_op;
 139 pub mod if_let_redundant_pattern_matching;
 140 pub mod if_not_else;
 141 pub mod infallible_destructuring_match;
 142 pub mod infinite_iter;
 143 pub mod inherent_impl;
 144 pub mod inline_fn_without_body;
 145 pub mod int_plus_one;
 146 pub mod invalid_ref;
 147 pub mod items_after_statements;
 148 pub mod large_enum_variant;
 149 pub mod len_zero;
 150 pub mod let_if_seq;
 151 pub mod lifetimes;
 152 pub mod literal_representation;
 153 pub mod loops;
 154 pub mod map_clone;
 155 pub mod map_unit_fn;
 156 pub mod matches;
 157 pub mod mem_forget;
 158 pub mod methods;
 159 pub mod minmax;
 160 pub mod misc;
 161 pub mod misc_early;
 162 pub mod missing_doc;
 163 pub mod multiple_crate_versions;
 164 pub mod mut_mut;
 165 pub mod mut_reference;
 166 pub mod mutex_atomic;
 167 pub mod needless_bool;
 168 pub mod needless_borrow;
 169 pub mod needless_borrowed_ref;
 170 pub mod needless_continue;
 171 pub mod needless_pass_by_value;
 172 pub mod needless_update;
 173 pub mod neg_cmp_op_on_partial_ord;
 174 pub mod neg_multiply;
 175 pub mod new_without_default;
 176 pub mod no_effect;
 177 pub mod non_expressive_names;
 178 pub mod ok_if_let;
 179 pub mod open_options;
 180 pub mod overflow_check_conditional;
 181 pub mod panic_unimplemented;
 182 pub mod partialeq_ne_impl;
 183 pub mod precedence;
 184 pub mod ptr;
 185 pub mod question_mark;
 186 pub mod ranges;
 187 pub mod redundant_field_names;
 188 pub mod reference;
 189 pub mod regex;
 190 pub mod replace_consts;
 191 pub mod returns;
 192 pub mod serde_api;
 193 pub mod shadow;
 194 pub mod strings;
 195 pub mod suspicious_trait_impl;
 196 pub mod swap;
 197 pub mod temporary_assignment;
 198 pub mod transmute;
 199 pub mod types;
 200 pub mod unicode;
 201 pub mod unsafe_removed_from_name;
 202 pub mod unused_io_amount;
 203 pub mod unused_label;
 204 pub mod unwrap;
 205 pub mod use_self;
 206 pub mod vec;
 207 pub mod write;
 208 pub mod zero_div_zero;
 209 // end lints modules, do not remove this comment, it’s used in `update_lints`
 210
 211 mod reexport {
 212     pub use syntax::ast::{Name, NodeId};
 213 }
 214
 215 #[cfg_attr(rustfmt, rustfmt_skip)]
 216 pub fn register_plugins(reg: &mut rustc_plugin::Registry) {
 217     let conf = match utils::conf::file_from_args(reg.args()) {
 218         Ok(file_name) => {
 219             // if the user specified a file, it must exist, otherwise default to `clippy.toml` but
 220             // do not require the file to exist
 221             let file_name = if let Some(file_name) = file_name {
 222                 Some(file_name)
 223             } else {
 224                 match utils::conf::lookup_conf_file() {
 225                     Ok(path) => path,
 226                     Err(error) => {
 227                         reg.sess.struct_err(&format!("error finding Clippy's configuration file: {}", error)).emit();
 228                         None
 229                     }
 230                 }
 231             };
 232
 233             let file_name = file_name.map(|file_name| if file_name.is_relative() {
 234                 reg.sess
 235                     .local_crate_source_file
 236                     .as_ref()
 237                     .and_then(|file| std::path::Path::new(&file).parent().map(std::path::Path::to_path_buf))
 238                     .unwrap_or_default()
 239                     .join(file_name)
 240             } else {
 241                 file_name
 242             });
 243
 244             let (conf, errors) = utils::conf::read(file_name.as_ref().map(|p| p.as_ref()));
 245
 246             // all conf errors are non-fatal, we just use the default conf in case of error
 247             for error in errors {
 248                 reg.sess.struct_err(&format!("error reading Clippy's configuration file `{}`: {}", file_name.as_ref().and_then(|p| p.to_str()).unwrap_or(""), error)).emit();
 249             }
 250
 251             conf
 252         }
 253         Err((err, span)) => {
 254             reg.sess.struct_span_err(span, err)
 255                     .span_note(span, "Clippy will use default configuration")
 256                     .emit();
 257             toml::from_str("").expect("we never error on empty config files")
 258         }
 259     };
 260
 261     let mut store = reg.sess.lint_store.borrow_mut();
 262     store.register_removed(
 263         "should_assert_eq",
 264         "`assert!()` will be more flexible with RFC 2011",
 265     );
 266     store.register_removed(
 267         "extend_from_slice",
 268         "`.extend_from_slice(_)` is a faster way to extend a Vec by a slice",
 269     );
 270     store.register_removed(
 271         "range_step_by_zero",
 272         "`iterator.step_by(0)` panics nowadays",
 273     );
 274     store.register_removed(
 275         "unstable_as_slice",
 276         "`Vec::as_slice` has been stabilized in 1.7",
 277     );
 278     store.register_removed(
 279         "unstable_as_mut_slice",
 280         "`Vec::as_mut_slice` has been stabilized in 1.7",
 281     );
 282     store.register_removed(
 283         "str_to_string",
 284         "using `str::to_string` is common even today and specialization will likely happen soon",
 285     );
 286     store.register_removed(
 287         "string_to_string",
 288         "using `string::to_string` is common even today and specialization will likely happen soon",
 289     );
 290     store.register_removed(
 291         "misaligned_transmute",
 292         "this lint has been split into cast_ptr_alignment and transmute_ptr_to_ptr",
 293     );
 294     // end deprecated lints, do not remove this comment, it’s used in `update_lints`
 295
 296     reg.register_late_lint_pass(box serde_api::Serde);
 297     reg.register_early_lint_pass(box utils::internal_lints::Clippy);
 298     reg.register_late_lint_pass(box utils::internal_lints::LintWithoutLintPass::default());
 299     reg.register_late_lint_pass(box utils::inspector::Pass);
 300     reg.register_late_lint_pass(box utils::author::Pass);
 301     reg.register_late_lint_pass(box types::TypePass);
 302     reg.register_late_lint_pass(box booleans::NonminimalBool);
 303     reg.register_late_lint_pass(box eq_op::EqOp);
 304     reg.register_early_lint_pass(box enum_variants::EnumVariantNames::new(conf.enum_variant_name_threshold));
 305     reg.register_late_lint_pass(box enum_glob_use::EnumGlobUse);
 306     reg.register_late_lint_pass(box enum_clike::UnportableVariant);
 307     reg.register_late_lint_pass(box excessive_precision::ExcessivePrecision);
 308     reg.register_late_lint_pass(box bit_mask::BitMask::new(conf.verbose_bit_mask_threshold));
 309     reg.register_late_lint_pass(box ptr::PointerPass);
 310     reg.register_late_lint_pass(box needless_bool::NeedlessBool);
 311     reg.register_late_lint_pass(box needless_bool::BoolComparison);
 312     reg.register_late_lint_pass(box approx_const::Pass);
 313     reg.register_late_lint_pass(box misc::Pass);
 314     reg.register_early_lint_pass(box precedence::Precedence);
 315     reg.register_early_lint_pass(box needless_continue::NeedlessContinue);
 316     reg.register_late_lint_pass(box eta_reduction::EtaPass);
 317     reg.register_late_lint_pass(box identity_op::IdentityOp);
 318     reg.register_late_lint_pass(box erasing_op::ErasingOp);
 319     reg.register_early_lint_pass(box items_after_statements::ItemsAfterStatements);
 320     reg.register_late_lint_pass(box mut_mut::MutMut);
 321     reg.register_late_lint_pass(box mut_reference::UnnecessaryMutPassed);
 322     reg.register_late_lint_pass(box len_zero::LenZero);
 323     reg.register_late_lint_pass(box attrs::AttrPass);
 324     reg.register_early_lint_pass(box collapsible_if::CollapsibleIf);
 325     reg.register_late_lint_pass(box block_in_if_condition::BlockInIfCondition);
 326     reg.register_late_lint_pass(box unicode::Unicode);
 327     reg.register_late_lint_pass(box strings::StringAdd);
 328     reg.register_early_lint_pass(box returns::ReturnPass);
 329     reg.register_late_lint_pass(box methods::Pass);
 330     reg.register_late_lint_pass(box shadow::Pass);
 331     reg.register_late_lint_pass(box types::LetPass);
 332     reg.register_late_lint_pass(box types::UnitCmp);
 333     reg.register_late_lint_pass(box loops::Pass);
 334     reg.register_late_lint_pass(box lifetimes::LifetimePass);
 335     reg.register_late_lint_pass(box entry::HashMapLint);
 336     reg.register_late_lint_pass(box ranges::Pass);
 337     reg.register_late_lint_pass(box types::CastPass);
 338     reg.register_late_lint_pass(box types::TypeComplexityPass::new(conf.type_complexity_threshold));
 339     reg.register_late_lint_pass(box matches::MatchPass);
 340     reg.register_late_lint_pass(box minmax::MinMaxPass);
 341     reg.register_late_lint_pass(box open_options::NonSensical);
 342     reg.register_late_lint_pass(box zero_div_zero::Pass);
 343     reg.register_late_lint_pass(box mutex_atomic::MutexAtomic);
 344     reg.register_late_lint_pass(box needless_update::Pass);
 345     reg.register_late_lint_pass(box needless_borrow::NeedlessBorrow);
 346     reg.register_late_lint_pass(box needless_borrowed_ref::NeedlessBorrowedRef);
 347     reg.register_late_lint_pass(box no_effect::Pass);
 348     reg.register_late_lint_pass(box map_clone::Pass);
 349     reg.register_late_lint_pass(box temporary_assignment::Pass);
 350     reg.register_late_lint_pass(box transmute::Transmute);
 351     reg.register_late_lint_pass(
 352         box cyclomatic_complexity::CyclomaticComplexity::new(conf.cyclomatic_complexity_threshold)
 353     );
 354     reg.register_late_lint_pass(box escape::Pass{too_large_for_stack: conf.too_large_for_stack});
 355     reg.register_early_lint_pass(box misc_early::MiscEarly);
 356     reg.register_late_lint_pass(box array_indexing::ArrayIndexing);
 357     reg.register_late_lint_pass(box panic_unimplemented::Pass);
 358     reg.register_late_lint_pass(box strings::StringLitAsBytes);
 359     reg.register_late_lint_pass(box derive::Derive);
 360     reg.register_late_lint_pass(box types::CharLitAsU8);
 361     reg.register_late_lint_pass(box write::Pass);
 362     reg.register_late_lint_pass(box vec::Pass);
 363     reg.register_early_lint_pass(box non_expressive_names::NonExpressiveNames {
 364         single_char_binding_names_threshold: conf.single_char_binding_names_threshold,
 365     });
 366     reg.register_late_lint_pass(box drop_forget_ref::Pass);
 367     reg.register_late_lint_pass(box empty_enum::EmptyEnum);
 368     reg.register_late_lint_pass(box types::AbsurdExtremeComparisons);
 369     reg.register_late_lint_pass(box types::InvalidUpcastComparisons);
 370     reg.register_late_lint_pass(box regex::Pass::default());
 371     reg.register_late_lint_pass(box copies::CopyAndPaste);
 372     reg.register_late_lint_pass(box format::Pass);
 373     reg.register_early_lint_pass(box formatting::Formatting);
 374     reg.register_late_lint_pass(box swap::Swap);
 375     reg.register_early_lint_pass(box if_not_else::IfNotElse);
 376     reg.register_early_lint_pass(box else_if_without_else::ElseIfWithoutElse);
 377     reg.register_early_lint_pass(box int_plus_one::IntPlusOne);
 378     reg.register_late_lint_pass(box overflow_check_conditional::OverflowCheckConditional);
 379     reg.register_late_lint_pass(box unused_label::UnusedLabel);
 380     reg.register_late_lint_pass(box new_without_default::NewWithoutDefault);
 381     reg.register_late_lint_pass(box blacklisted_name::BlackListedName::new(conf.blacklisted_names));
 382     reg.register_late_lint_pass(box functions::Functions::new(conf.too_many_arguments_threshold));
 383     reg.register_early_lint_pass(box doc::Doc::new(conf.doc_valid_idents));
 384     reg.register_late_lint_pass(box neg_multiply::NegMultiply);
 385     reg.register_early_lint_pass(box unsafe_removed_from_name::UnsafeNameRemoval);
 386     reg.register_late_lint_pass(box mem_forget::MemForget);
 387     reg.register_late_lint_pass(box arithmetic::Arithmetic::default());
 388     reg.register_late_lint_pass(box assign_ops::AssignOps);
 389     reg.register_late_lint_pass(box let_if_seq::LetIfSeq);
 390     reg.register_late_lint_pass(box eval_order_dependence::EvalOrderDependence);
 391     reg.register_late_lint_pass(box missing_doc::MissingDoc::new());
 392     reg.register_late_lint_pass(box ok_if_let::Pass);
 393     reg.register_late_lint_pass(box if_let_redundant_pattern_matching::Pass);
 394     reg.register_late_lint_pass(box partialeq_ne_impl::Pass);
 395     reg.register_early_lint_pass(box reference::Pass);
 396     reg.register_early_lint_pass(box reference::DerefPass);
 397     reg.register_early_lint_pass(box double_parens::DoubleParens);
 398     reg.register_late_lint_pass(box unused_io_amount::UnusedIoAmount);
 399     reg.register_late_lint_pass(box large_enum_variant::LargeEnumVariant::new(conf.enum_variant_size_threshold));
 400     reg.register_late_lint_pass(box explicit_write::Pass);
 401     reg.register_late_lint_pass(box needless_pass_by_value::NeedlessPassByValue);
 402     reg.register_early_lint_pass(box literal_representation::LiteralDigitGrouping);
 403     reg.register_early_lint_pass(box literal_representation::LiteralRepresentation::new(
 404             conf.literal_representation_threshold
 405     ));
 406     reg.register_late_lint_pass(box use_self::UseSelf);
 407     reg.register_late_lint_pass(box bytecount::ByteCount);
 408     reg.register_late_lint_pass(box infinite_iter::Pass);
 409     reg.register_late_lint_pass(box inline_fn_without_body::Pass);
 410     reg.register_late_lint_pass(box invalid_ref::InvalidRef);
 411     reg.register_late_lint_pass(box identity_conversion::IdentityConversion::default());
 412     reg.register_late_lint_pass(box types::ImplicitHasher);
 413     reg.register_early_lint_pass(box const_static_lifetime::StaticConst);
 414     reg.register_late_lint_pass(box fallible_impl_from::FallibleImplFrom);
 415     reg.register_late_lint_pass(box replace_consts::ReplaceConsts);
 416     reg.register_late_lint_pass(box types::UnitArg);
 417     reg.register_late_lint_pass(box double_comparison::DoubleComparisonPass);
 418     reg.register_late_lint_pass(box question_mark::QuestionMarkPass);
 419     reg.register_late_lint_pass(box suspicious_trait_impl::SuspiciousImpl);
 420     reg.register_late_lint_pass(box redundant_field_names::RedundantFieldNames);
 421     reg.register_early_lint_pass(box multiple_crate_versions::Pass);
 422     reg.register_late_lint_pass(box map_unit_fn::Pass);
 423     reg.register_late_lint_pass(box infallible_destructuring_match::Pass);
 424     reg.register_late_lint_pass(box inherent_impl::Pass::default());
 425     reg.register_late_lint_pass(box neg_cmp_op_on_partial_ord::NoNegCompOpForPartialOrd);
 426     reg.register_late_lint_pass(box unwrap::Pass);
 427     reg.register_late_lint_pass(box duration_subsec::DurationSubsec);
 428
 429
 430     reg.register_lint_group("clippy_restriction", vec![
 431         arithmetic::FLOAT_ARITHMETIC,
 432         arithmetic::INTEGER_ARITHMETIC,
 433         array_indexing::INDEXING_SLICING,
 434         assign_ops::ASSIGN_OPS,
 435         else_if_without_else::ELSE_IF_WITHOUT_ELSE,
 436         inherent_impl::MULTIPLE_INHERENT_IMPL,
 437         literal_representation::DECIMAL_LITERAL_REPRESENTATION,
 438         mem_forget::MEM_FORGET,
 439         methods::CLONE_ON_REF_PTR,
 440         methods::OPTION_UNWRAP_USED,
 441         methods::RESULT_UNWRAP_USED,
 442         methods::WRONG_PUB_SELF_CONVENTION,
 443         misc::FLOAT_CMP_CONST,
 444         missing_doc::MISSING_DOCS_IN_PRIVATE_ITEMS,
 445         panic_unimplemented::UNIMPLEMENTED,
 446         shadow::SHADOW_REUSE,
 447         shadow::SHADOW_SAME,
 448         shadow::SHADOW_UNRELATED,
 449         strings::STRING_ADD,
 450         write::PRINT_STDOUT,
 451         write::USE_DEBUG,
 452     ]);
 453
 454     reg.register_lint_group("clippy_pedantic", vec![
 455         attrs::INLINE_ALWAYS,
 456         copies::MATCH_SAME_ARMS,
 457         derive::EXPL_IMPL_CLONE_ON_COPY,
 458         doc::DOC_MARKDOWN,
 459         empty_enum::EMPTY_ENUM,
 460         enum_glob_use::ENUM_GLOB_USE,
 461         enum_variants::PUB_ENUM_VARIANT_NAMES,
 462         enum_variants::STUTTER,
 463         if_not_else::IF_NOT_ELSE,
 464         infinite_iter::MAYBE_INFINITE_ITER,
 465         items_after_statements::ITEMS_AFTER_STATEMENTS,
 466         matches::SINGLE_MATCH_ELSE,
 467         methods::FILTER_MAP,
 468         methods::OPTION_MAP_UNWRAP_OR,
 469         methods::OPTION_MAP_UNWRAP_OR_ELSE,
 470         methods::RESULT_MAP_UNWRAP_OR_ELSE,
 471         misc::USED_UNDERSCORE_BINDING,
 472         misc_early::UNSEPARATED_LITERAL_SUFFIX,
 473         mut_mut::MUT_MUT,
 474         needless_continue::NEEDLESS_CONTINUE,
 475         non_expressive_names::SIMILAR_NAMES,
 476         replace_consts::REPLACE_CONSTS,
 477         strings::STRING_ADD_ASSIGN,
 478         types::CAST_POSSIBLE_TRUNCATION,
 479         types::CAST_POSSIBLE_WRAP,
 480         types::CAST_PRECISION_LOSS,
 481         types::CAST_SIGN_LOSS,
 482         types::INVALID_UPCAST_COMPARISONS,
 483         types::LINKEDLIST,
 484         unicode::NON_ASCII_LITERAL,
 485         unicode::UNICODE_NOT_NFC,
 486         use_self::USE_SELF,
 487     ]);
 488
 489     reg.register_lint_group("clippy_internal", vec![
 490         utils::internal_lints::CLIPPY_LINTS_INTERNAL,
 491         utils::internal_lints::LINT_WITHOUT_LINT_PASS,
 492     ]);
 493
 494     reg.register_lint_group("clippy", vec![
 495         approx_const::APPROX_CONSTANT,
 496         array_indexing::OUT_OF_BOUNDS_INDEXING,
 497         assign_ops::ASSIGN_OP_PATTERN,
 498         assign_ops::MISREFACTORED_ASSIGN_OP,
 499         attrs::DEPRECATED_SEMVER,
 500         attrs::USELESS_ATTRIBUTE,
 501         bit_mask::BAD_BIT_MASK,
 502         bit_mask::INEFFECTIVE_BIT_MASK,
 503         bit_mask::VERBOSE_BIT_MASK,
 504         blacklisted_name::BLACKLISTED_NAME,
 505         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 506         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 507         booleans::LOGIC_BUG,
 508         booleans::NONMINIMAL_BOOL,
 509         bytecount::NAIVE_BYTECOUNT,
 510         neg_cmp_op_on_partial_ord::NEG_CMP_OP_ON_PARTIAL_ORD,
 511         collapsible_if::COLLAPSIBLE_IF,
 512         const_static_lifetime::CONST_STATIC_LIFETIME,
 513         copies::IF_SAME_THEN_ELSE,
 514         copies::IFS_SAME_COND,
 515         cyclomatic_complexity::CYCLOMATIC_COMPLEXITY,
 516         derive::DERIVE_HASH_XOR_EQ,
 517         double_comparison::DOUBLE_COMPARISONS,
 518         double_parens::DOUBLE_PARENS,
 519         drop_forget_ref::DROP_COPY,
 520         drop_forget_ref::DROP_REF,
 521         drop_forget_ref::FORGET_COPY,
 522         drop_forget_ref::FORGET_REF,
 523         duration_subsec::DURATION_SUBSEC,
 524         entry::MAP_ENTRY,
 525         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
 526         enum_variants::ENUM_VARIANT_NAMES,
 527         enum_variants::MODULE_INCEPTION,
 528         eq_op::EQ_OP,
 529         eq_op::OP_REF,
 530         erasing_op::ERASING_OP,
 531         escape::BOXED_LOCAL,
 532         eta_reduction::REDUNDANT_CLOSURE,
 533         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
 534         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
 535         excessive_precision::EXCESSIVE_PRECISION,
 536         explicit_write::EXPLICIT_WRITE,
 537         format::USELESS_FORMAT,
 538         formatting::POSSIBLE_MISSING_COMMA,
 539         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 540         formatting::SUSPICIOUS_ELSE_FORMATTING,
 541         functions::NOT_UNSAFE_PTR_ARG_DEREF,
 542         functions::TOO_MANY_ARGUMENTS,
 543         identity_conversion::IDENTITY_CONVERSION,
 544         identity_op::IDENTITY_OP,
 545         if_let_redundant_pattern_matching::IF_LET_REDUNDANT_PATTERN_MATCHING,
 546         infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
 547         infinite_iter::INFINITE_ITER,
 548         inline_fn_without_body::INLINE_FN_WITHOUT_BODY,
 549         int_plus_one::INT_PLUS_ONE,
 550         invalid_ref::INVALID_REF,
 551         large_enum_variant::LARGE_ENUM_VARIANT,
 552         len_zero::LEN_WITHOUT_IS_EMPTY,
 553         len_zero::LEN_ZERO,
 554         let_if_seq::USELESS_LET_IF_SEQ,
 555         lifetimes::EXTRA_UNUSED_LIFETIMES,
 556         lifetimes::NEEDLESS_LIFETIMES,
 557         literal_representation::INCONSISTENT_DIGIT_GROUPING,
 558         literal_representation::LARGE_DIGIT_GROUPS,
 559         literal_representation::UNREADABLE_LITERAL,
 560         loops::EMPTY_LOOP,
 561         loops::EXPLICIT_COUNTER_LOOP,
 562         loops::EXPLICIT_INTO_ITER_LOOP,
 563         loops::EXPLICIT_ITER_LOOP,
 564         loops::FOR_KV_MAP,
 565         loops::FOR_LOOP_OVER_OPTION,
 566         loops::FOR_LOOP_OVER_RESULT,
 567         loops::ITER_NEXT_LOOP,
 568         loops::MANUAL_MEMCPY,
 569         loops::MUT_RANGE_BOUND,
 570         loops::NEEDLESS_RANGE_LOOP,
 571         loops::NEVER_LOOP,
 572         loops::REVERSE_RANGE_LOOP,
 573         loops::UNUSED_COLLECT,
 574         loops::WHILE_IMMUTABLE_CONDITION,
 575         loops::WHILE_LET_LOOP,
 576         loops::WHILE_LET_ON_ITERATOR,
 577         map_clone::MAP_CLONE,
 578         map_unit_fn::OPTION_MAP_UNIT_FN,
 579         map_unit_fn::RESULT_MAP_UNIT_FN,
 580         matches::MATCH_AS_REF,
 581         matches::MATCH_BOOL,
 582         matches::MATCH_OVERLAPPING_ARM,
 583         matches::MATCH_REF_PATS,
 584         matches::MATCH_WILD_ERR_ARM,
 585         matches::SINGLE_MATCH,
 586         methods::CHARS_LAST_CMP,
 587         methods::CHARS_NEXT_CMP,
 588         methods::CLONE_DOUBLE_REF,
 589         methods::CLONE_ON_COPY,
 590         methods::FILTER_NEXT,
 591         methods::GET_UNWRAP,
 592         methods::ITER_CLONED_COLLECT,
 593         methods::ITER_NTH,
 594         methods::ITER_SKIP_NEXT,
 595         methods::NEW_RET_NO_SELF,
 596         methods::OK_EXPECT,
 597         methods::OPTION_MAP_OR_NONE,
 598         methods::OR_FUN_CALL,
 599         methods::SEARCH_IS_SOME,
 600         methods::SHOULD_IMPLEMENT_TRAIT,
 601         methods::SINGLE_CHAR_PATTERN,
 602         methods::STRING_EXTEND_CHARS,
 603         methods::TEMPORARY_CSTRING_AS_PTR,
 604         methods::UNNECESSARY_FOLD,
 605         methods::USELESS_ASREF,
 606         methods::WRONG_SELF_CONVENTION,
 607         minmax::MIN_MAX,
 608         misc::CMP_NAN,
 609         misc::CMP_OWNED,
 610         misc::FLOAT_CMP,
 611         misc::MODULO_ONE,
 612         misc::REDUNDANT_PATTERN,
 613         misc::SHORT_CIRCUIT_STATEMENT,
 614         misc::TOPLEVEL_REF_ARG,
 615         misc::ZERO_PTR,
 616         misc_early::BUILTIN_TYPE_SHADOW,
 617         misc_early::DOUBLE_NEG,
 618         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
 619         misc_early::MIXED_CASE_HEX_LITERALS,
 620         misc_early::REDUNDANT_CLOSURE_CALL,
 621         misc_early::UNNEEDED_FIELD_PATTERN,
 622         misc_early::ZERO_PREFIXED_LITERAL,
 623         mut_reference::UNNECESSARY_MUT_PASSED,
 624         mutex_atomic::MUTEX_ATOMIC,
 625         needless_bool::BOOL_COMPARISON,
 626         needless_bool::NEEDLESS_BOOL,
 627         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
 628         needless_pass_by_value::NEEDLESS_PASS_BY_VALUE,
 629         needless_update::NEEDLESS_UPDATE,
 630         neg_multiply::NEG_MULTIPLY,
 631         new_without_default::NEW_WITHOUT_DEFAULT,
 632         new_without_default::NEW_WITHOUT_DEFAULT_DERIVE,
 633         no_effect::NO_EFFECT,
 634         no_effect::UNNECESSARY_OPERATION,
 635         non_expressive_names::JUST_UNDERSCORES_AND_DIGITS,
 636         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
 637         ok_if_let::IF_LET_SOME_RESULT,
 638         open_options::NONSENSICAL_OPEN_OPTIONS,
 639         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
 640         panic_unimplemented::PANIC_PARAMS,
 641         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
 642         precedence::PRECEDENCE,
 643         ptr::CMP_NULL,
 644         ptr::MUT_FROM_REF,
 645         ptr::PTR_ARG,
 646         question_mark::QUESTION_MARK,
 647         ranges::ITERATOR_STEP_BY_ZERO,
 648         ranges::RANGE_MINUS_ONE,
 649         ranges::RANGE_ZIP_WITH_LEN,
 650         redundant_field_names::REDUNDANT_FIELD_NAMES,
 651         reference::DEREF_ADDROF,
 652         reference::REF_IN_DEREF,
 653         regex::INVALID_REGEX,
 654         regex::REGEX_MACRO,
 655         regex::TRIVIAL_REGEX,
 656         returns::LET_AND_RETURN,
 657         returns::NEEDLESS_RETURN,
 658         serde_api::SERDE_API_MISUSE,
 659         strings::STRING_LIT_AS_BYTES,
 660         suspicious_trait_impl::SUSPICIOUS_ARITHMETIC_IMPL,
 661         suspicious_trait_impl::SUSPICIOUS_OP_ASSIGN_IMPL,
 662         swap::ALMOST_SWAPPED,
 663         swap::MANUAL_SWAP,
 664         temporary_assignment::TEMPORARY_ASSIGNMENT,
 665         transmute::CROSSPOINTER_TRANSMUTE,
 666         transmute::TRANSMUTE_BYTES_TO_STR,
 667         transmute::TRANSMUTE_INT_TO_BOOL,
 668         transmute::TRANSMUTE_INT_TO_CHAR,
 669         transmute::TRANSMUTE_INT_TO_FLOAT,
 670         transmute::TRANSMUTE_PTR_TO_PTR,
 671         transmute::TRANSMUTE_PTR_TO_REF,
 672         transmute::USELESS_TRANSMUTE,
 673         transmute::WRONG_TRANSMUTE,
 674         types::ABSURD_EXTREME_COMPARISONS,
 675         types::BORROWED_BOX,
 676         types::BOX_VEC,
 677         types::CAST_LOSSLESS,
 678         types::CAST_PTR_ALIGNMENT,
 679         types::CHAR_LIT_AS_U8,
 680         types::IMPLICIT_HASHER,
 681         types::LET_UNIT_VALUE,
 682         types::OPTION_OPTION,
 683         types::TYPE_COMPLEXITY,
 684         types::UNIT_ARG,
 685         types::UNIT_CMP,
 686         types::UNNECESSARY_CAST,
 687         types::FN_TO_NUMERIC_CAST,
 688         unicode::ZERO_WIDTH_SPACE,
 689         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
 690         unused_io_amount::UNUSED_IO_AMOUNT,
 691         unused_label::UNUSED_LABEL,
 692         vec::USELESS_VEC,
 693         write::PRINT_LITERAL,
 694         write::PRINT_WITH_NEWLINE,
 695         write::PRINTLN_EMPTY_STRING,
 696         write::WRITE_LITERAL,
 697         write::WRITE_WITH_NEWLINE,
 698         write::WRITELN_EMPTY_STRING,
 699         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
 700     ]);
 701
 702     reg.register_lint_group("clippy_style", vec![
 703         assign_ops::ASSIGN_OP_PATTERN,
 704         bit_mask::VERBOSE_BIT_MASK,
 705         blacklisted_name::BLACKLISTED_NAME,
 706         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 707         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 708         collapsible_if::COLLAPSIBLE_IF,
 709         const_static_lifetime::CONST_STATIC_LIFETIME,
 710         enum_variants::ENUM_VARIANT_NAMES,
 711         enum_variants::MODULE_INCEPTION,
 712         eq_op::OP_REF,
 713         eta_reduction::REDUNDANT_CLOSURE,
 714         excessive_precision::EXCESSIVE_PRECISION,
 715         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 716         formatting::SUSPICIOUS_ELSE_FORMATTING,
 717         if_let_redundant_pattern_matching::IF_LET_REDUNDANT_PATTERN_MATCHING,
 718         infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
 719         len_zero::LEN_WITHOUT_IS_EMPTY,
 720         len_zero::LEN_ZERO,
 721         let_if_seq::USELESS_LET_IF_SEQ,
 722         literal_representation::INCONSISTENT_DIGIT_GROUPING,
 723         literal_representation::LARGE_DIGIT_GROUPS,
 724         literal_representation::UNREADABLE_LITERAL,
 725         loops::EMPTY_LOOP,
 726         loops::EXPLICIT_INTO_ITER_LOOP,
 727         loops::EXPLICIT_ITER_LOOP,
 728         loops::FOR_KV_MAP,
 729         loops::NEEDLESS_RANGE_LOOP,
 730         loops::WHILE_LET_ON_ITERATOR,
 731         map_clone::MAP_CLONE,
 732         matches::MATCH_BOOL,
 733         matches::MATCH_OVERLAPPING_ARM,
 734         matches::MATCH_REF_PATS,
 735         matches::MATCH_WILD_ERR_ARM,
 736         matches::SINGLE_MATCH,
 737         methods::CHARS_LAST_CMP,
 738         methods::GET_UNWRAP,
 739         methods::ITER_CLONED_COLLECT,
 740         methods::ITER_SKIP_NEXT,
 741         methods::NEW_RET_NO_SELF,
 742         methods::OK_EXPECT,
 743         methods::OPTION_MAP_OR_NONE,
 744         methods::SHOULD_IMPLEMENT_TRAIT,
 745         methods::STRING_EXTEND_CHARS,
 746         methods::UNNECESSARY_FOLD,
 747         methods::WRONG_SELF_CONVENTION,
 748         misc::REDUNDANT_PATTERN,
 749         misc::TOPLEVEL_REF_ARG,
 750         misc::ZERO_PTR,
 751         misc_early::BUILTIN_TYPE_SHADOW,
 752         misc_early::DOUBLE_NEG,
 753         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
 754         misc_early::MIXED_CASE_HEX_LITERALS,
 755         misc_early::UNNEEDED_FIELD_PATTERN,
 756         mut_reference::UNNECESSARY_MUT_PASSED,
 757         needless_pass_by_value::NEEDLESS_PASS_BY_VALUE,
 758         neg_multiply::NEG_MULTIPLY,
 759         new_without_default::NEW_WITHOUT_DEFAULT,
 760         new_without_default::NEW_WITHOUT_DEFAULT_DERIVE,
 761         non_expressive_names::JUST_UNDERSCORES_AND_DIGITS,
 762         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
 763         ok_if_let::IF_LET_SOME_RESULT,
 764         panic_unimplemented::PANIC_PARAMS,
 765         ptr::CMP_NULL,
 766         ptr::PTR_ARG,
 767         question_mark::QUESTION_MARK,
 768         ranges::RANGE_MINUS_ONE,
 769         redundant_field_names::REDUNDANT_FIELD_NAMES,
 770         regex::REGEX_MACRO,
 771         regex::TRIVIAL_REGEX,
 772         returns::LET_AND_RETURN,
 773         returns::NEEDLESS_RETURN,
 774         strings::STRING_LIT_AS_BYTES,
 775         types::IMPLICIT_HASHER,
 776         types::LET_UNIT_VALUE,
 777         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
 778         write::PRINT_LITERAL,
 779         write::PRINT_WITH_NEWLINE,
 780         write::PRINTLN_EMPTY_STRING,
 781         write::WRITE_LITERAL,
 782         write::WRITE_WITH_NEWLINE,
 783         write::WRITELN_EMPTY_STRING,
 784     ]);
 785
 786     reg.register_lint_group("clippy_complexity", vec![
 787         assign_ops::MISREFACTORED_ASSIGN_OP,
 788         booleans::NONMINIMAL_BOOL,
 789         cyclomatic_complexity::CYCLOMATIC_COMPLEXITY,
 790         double_comparison::DOUBLE_COMPARISONS,
 791         double_parens::DOUBLE_PARENS,
 792         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
 793         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
 794         explicit_write::EXPLICIT_WRITE,
 795         format::USELESS_FORMAT,
 796         functions::TOO_MANY_ARGUMENTS,
 797         identity_conversion::IDENTITY_CONVERSION,
 798         identity_op::IDENTITY_OP,
 799         int_plus_one::INT_PLUS_ONE,
 800         lifetimes::EXTRA_UNUSED_LIFETIMES,
 801         lifetimes::NEEDLESS_LIFETIMES,
 802         loops::EXPLICIT_COUNTER_LOOP,
 803         loops::MUT_RANGE_BOUND,
 804         loops::WHILE_LET_LOOP,
 805         map_unit_fn::OPTION_MAP_UNIT_FN,
 806         map_unit_fn::RESULT_MAP_UNIT_FN,
 807         matches::MATCH_AS_REF,
 808         methods::CHARS_NEXT_CMP,
 809         methods::CLONE_ON_COPY,
 810         methods::FILTER_NEXT,
 811         methods::SEARCH_IS_SOME,
 812         methods::USELESS_ASREF,
 813         misc::SHORT_CIRCUIT_STATEMENT,
 814         misc_early::REDUNDANT_CLOSURE_CALL,
 815         misc_early::ZERO_PREFIXED_LITERAL,
 816         needless_bool::BOOL_COMPARISON,
 817         needless_bool::NEEDLESS_BOOL,
 818         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
 819         needless_update::NEEDLESS_UPDATE,
 820         no_effect::NO_EFFECT,
 821         no_effect::UNNECESSARY_OPERATION,
 822         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
 823         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
 824         precedence::PRECEDENCE,
 825         ranges::RANGE_ZIP_WITH_LEN,
 826         reference::DEREF_ADDROF,
 827         reference::REF_IN_DEREF,
 828         swap::MANUAL_SWAP,
 829         temporary_assignment::TEMPORARY_ASSIGNMENT,
 830         transmute::CROSSPOINTER_TRANSMUTE,
 831         transmute::TRANSMUTE_BYTES_TO_STR,
 832         transmute::TRANSMUTE_INT_TO_BOOL,
 833         transmute::TRANSMUTE_INT_TO_CHAR,
 834         transmute::TRANSMUTE_INT_TO_FLOAT,
 835         transmute::TRANSMUTE_PTR_TO_PTR,
 836         transmute::TRANSMUTE_PTR_TO_REF,
 837         transmute::USELESS_TRANSMUTE,
 838         types::BORROWED_BOX,
 839         types::CAST_LOSSLESS,
 840         types::CHAR_LIT_AS_U8,
 841         types::OPTION_OPTION,
 842         types::TYPE_COMPLEXITY,
 843         types::UNIT_ARG,
 844         types::UNNECESSARY_CAST,
 845         unused_label::UNUSED_LABEL,
 846         unwrap::UNNECESSARY_UNWRAP,
 847         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
 848     ]);
 849
 850     reg.register_lint_group("clippy_correctness", vec![
 851         approx_const::APPROX_CONSTANT,
 852         array_indexing::OUT_OF_BOUNDS_INDEXING,
 853         attrs::DEPRECATED_SEMVER,
 854         attrs::USELESS_ATTRIBUTE,
 855         bit_mask::BAD_BIT_MASK,
 856         bit_mask::INEFFECTIVE_BIT_MASK,
 857         booleans::LOGIC_BUG,
 858         copies::IF_SAME_THEN_ELSE,
 859         copies::IFS_SAME_COND,
 860         derive::DERIVE_HASH_XOR_EQ,
 861         drop_forget_ref::DROP_COPY,
 862         drop_forget_ref::DROP_REF,
 863         drop_forget_ref::FORGET_COPY,
 864         drop_forget_ref::FORGET_REF,
 865         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
 866         eq_op::EQ_OP,
 867         erasing_op::ERASING_OP,
 868         formatting::POSSIBLE_MISSING_COMMA,
 869         functions::NOT_UNSAFE_PTR_ARG_DEREF,
 870         infinite_iter::INFINITE_ITER,
 871         inline_fn_without_body::INLINE_FN_WITHOUT_BODY,
 872         invalid_ref::INVALID_REF,
 873         loops::FOR_LOOP_OVER_OPTION,
 874         loops::FOR_LOOP_OVER_RESULT,
 875         loops::ITER_NEXT_LOOP,
 876         loops::NEVER_LOOP,
 877         loops::REVERSE_RANGE_LOOP,
 878         loops::WHILE_IMMUTABLE_CONDITION,
 879         methods::CLONE_DOUBLE_REF,
 880         methods::TEMPORARY_CSTRING_AS_PTR,
 881         minmax::MIN_MAX,
 882         misc::CMP_NAN,
 883         misc::FLOAT_CMP,
 884         misc::MODULO_ONE,
 885         open_options::NONSENSICAL_OPEN_OPTIONS,
 886         ptr::MUT_FROM_REF,
 887         ranges::ITERATOR_STEP_BY_ZERO,
 888         regex::INVALID_REGEX,
 889         serde_api::SERDE_API_MISUSE,
 890         suspicious_trait_impl::SUSPICIOUS_ARITHMETIC_IMPL,
 891         suspicious_trait_impl::SUSPICIOUS_OP_ASSIGN_IMPL,
 892         swap::ALMOST_SWAPPED,
 893         transmute::WRONG_TRANSMUTE,
 894         types::ABSURD_EXTREME_COMPARISONS,
 895         types::CAST_PTR_ALIGNMENT,
 896         types::UNIT_CMP,
 897         unicode::ZERO_WIDTH_SPACE,
 898         unused_io_amount::UNUSED_IO_AMOUNT,
 899     ]);
 900
 901     reg.register_lint_group("clippy_perf", vec![
 902         bytecount::NAIVE_BYTECOUNT,
 903         entry::MAP_ENTRY,
 904         escape::BOXED_LOCAL,
 905         large_enum_variant::LARGE_ENUM_VARIANT,
 906         loops::MANUAL_MEMCPY,
 907         loops::UNUSED_COLLECT,
 908         methods::ITER_NTH,
 909         methods::OR_FUN_CALL,
 910         methods::SINGLE_CHAR_PATTERN,
 911         misc::CMP_OWNED,
 912         mutex_atomic::MUTEX_ATOMIC,
 913         types::BOX_VEC,
 914         vec::USELESS_VEC,
 915     ]);
 916
 917     reg.register_lint_group("clippy_cargo", vec![
 918         multiple_crate_versions::MULTIPLE_CRATE_VERSIONS,
 919     ]);
 920
 921     reg.register_lint_group("clippy_nursery", vec![
 922         attrs::EMPTY_LINE_AFTER_OUTER_ATTR,
 923         fallible_impl_from::FALLIBLE_IMPL_FROM,
 924         mutex_atomic::MUTEX_INTEGER,
 925         needless_borrow::NEEDLESS_BORROW,
 926         ranges::RANGE_PLUS_ONE,
 927     ]);
 928 }
 929
 930 // only exists to let the dogfood integration test works.
 931 // Don't run clippy as an executable directly
 932 #[allow(dead_code, print_stdout)]
 933 fn main() {
 934     panic!("Please use the cargo-clippy executable");
 935 }